Valve-lifter



R. L. CHISWELL.

VALVE LIFTER.

APPLICATION FILED JULY 3.1920.

' 4 1 Patented July 12, 1921.

2 SHEETSSHEET I.

R. L. CRISWELL.

VALVE HFTER.

APPLICATION FILED JULY 3. 1920.

J/YI E/WO/Z UNITED STATES RICHARD L. CRISWELL, OF LAKEWOOD, OHIO.

VALVE-LIFTER.

Specification of Letters Patent.

Patented July 12, 1921.

Application filed July 3, 1920.. Serial No. 393,899.

To all whom it may O07LC677Z.

Be it known that I, RICHARD L. CniswnLL, a citizen of the United States ofAmerica, and resident of Lakewood, county of Guyahoga, and State of Ohio, have invented certain new and useful Improvements in Valve- Lifters, of which the following is a specifics tion.

This invention relates broadly to valve lifters, and it has for its primary object to provide an improved form of tool for elevating or compressing the valve-seating springs of internal combustion engines to permit of the ready removal and insertion of the usual spring-retaining pins.

A further object is to provide a tool the character mentioned which has the spring-engaging portion thereof adjustable to the extent that it is adapted for application to springs and valve stems of any of the various sizes commonly employed.

With these and other objects in view, the invention resides in the features of construction, arrangement of parts and combinations of elementswhich will hereinalter be exemplified, reference being had to the accompanying drawings, in which Figure 1 is a side elevation of the invention showing the same applied in an approximate initial, or entering, position;

Fig. 2 is a top plan view of a preferred form of the lifting bar;

Figs. 3 and 4 are enlarged sections of the same taken, respectively, on lines 33 and Jr-4 Fig. 2;

Fig. 5 is a fragmentary top plan view of the fulcrum bar;

Fig. 6 is a view similar to Fig. 1, showing a modified construction of the fulcrum element;

i Fig. 7 is a similar view illustrating the invention still further modified to adapt it for use in compressing springs in a downward direction; and-- p Fig. 8 is an enlarged elevation of the chainengaging hook shown in Fig. 6.

Referring tosaid drawings, in which like designating characters distinguish like parts throughout the several views A indicates generally the lifting bar which comprises a handle portion 1 and a pair of opposing spring-engaging jaws 2 adapted for application in straddling relation to the stem 3 of a valve 4: and in underlying supporting relation to the stem-encircling valve spring 5. In the preferred embodiment of the invention, illustrated in Fig. 1, the lift-' ing bar A rests upon a fulcrum bar which is indicatedgenerally by the character B. Said fulcrum bar, which is of approximately semi-cylindrica1 form in cross-section and which is designed to be positioned with its flat surface uppermost, embodies a handle portion 6 and a flat bifurcated head portion 7, the latter being designed for seatingupon a stationary part, as 8, of the engine in straddling relation. to the valve stem below the position of the retaining pin 9. Intermedi ate the head portion 7 andthe handle portion 6 is a bend by which the latter is'disposed at a suitable downwardly inclined angle to the plane of the former, said bend preferably having an upwardly bowed form, as shown at 10, to provide an arcuately curved seat which constitutes a fulcrum upon which the lift ng bar A is rocked for producing the requisite elevation of the valve spring, as

indicated in dotted linesin Fig. 1.

A chain 11 having an end attached to the,

outer end of the bar A depends loosely through an opening 12 provided in the outer end of the bar B. Said chain drops freely through said opening as the outer ends of said bars assume closer relation in the springelevating movement, and, when the desired elevation has been effected said chain is drawn forward into a forwardly extending V-shaped slot 13 in which itwill be gripped and firmly heldfor maintaining the adjust ed relation of said bars. a r V In the modification illustrated in Fig. 6, a

hook and chain device is substituted for the v bar B. Said device comprises a hook 14: designed to have the point of its bill seat upon a suitable overlying part, as the valve 4, for support. and a chain 15 attached. to said hook. A hook 16 having an eye portion 17 loosely embracing the liftingbar A is designed to receive and grip any portion of said chain 15 which may be drawn into engagement therewith for supporting said bar during the valve-spring-lifting-opera tion. As is apparent, thehook 16, which may be adjusted along said bar it any suitable position, constitutes a fulcrum upon which said bar is operated during said lifting operation.v f

The modified construction above described may. also be employed for compressing the springs of downwardly opening valves by interengaging the hook 1A with any suitable stationary part of theengine or engine-supporting frame, as the ledge 23 shown in Fig. 7. Or, for compressing such springs, a further modified construction illustrated in ,liig. 7 may be used. In such further modified construction a chain having a 11001 24 at its upper end is looped over the lifting bar A and is adapted to be inter-engaged with a hook 18 which is attached to the hook 14 j and which has the point of its bill disposed in underlying engagement wlth the pro ecting ledge 23.

In its preferred construction, the lifting bar is formed of a single sheet metal blank and comprises companion members 1 and 1" which together constitute the" handle portion 1. Each of said members l and l", which are'connected at their outer ends by a transverse integral web 19, is of approximate ll shape in cross section, and said members are arranged with the parallel sides of the member 1 received within the embrace of the correspondin sides of the member 1 as shown n'l 'ig. 4 so that said members are relatively ad ustable telescopically for adjusting the spread of the jaws 2 to suit valve stems or springs of varying sizes. 'The lifting bar is so formed that the jaw carrying ends of its members normally tend to spread apart a distance adapting the aws for applicationto the largest sizes of commercially used springs. A bolt 20 directed through said members adjacent to the jaws 2 carriesa wing nut 21 whereby said members may be adjusted toward each other against the resilience tending to hold the same apart, as when application'of the bar to springs of smaller size is desired.

The jaws 2 are preferably of L shape in cross section and have the adjacent er ges of the horizontal portions thereof beveled, as shown at "22 in Fig. 3, to facilitate the en tering ofsaid portions beneath the springs. What is claimed is-- r 1 1. In a valve lifter, a lifting bar comprising a handle portion composedof connected companion channel members arranged in telesco'plng relation and terminated at one end by jaws for engagement with a valve spring, means for relatively adjusting said members, and a fulcrum element associated with said bar.

3." In a valve lifter, a lifting bar comprising a handle portion having connected relativelyzuljustable telescoping members terminated at one end by aws for engagement with a valve spring, and a fulcrum element in underlying engagement with said bar, said element comprising a bar shaped to form a bifurcated head portion and a handle portion, said handle portion being inclined downward from the plane of said head portion. r

l. in a valve lifter, alifting bar comprising a handle portion, having connected relatively adjustable companion members terminated at one end by jaws for engagement with a valve spring, and a fulcrum element associated with said bar, said element comprising a bar shaped to form a bifurcated head portion, a handle portion and an upwardly bowed portion intermediate said head and handle portions, said handle portion being downwardly inclined from the plane of said head portion, and the convex face of said bowed portion constituting a seat upon which said lifting bar is fulcrumed.

5. In a valve lifter, a lifting bar comprising a handle portion having connected relatively adjustable companion members terminated at one end by jaws for engagement with a valve spring, and a fulcrum clement associated with said bar, said element comprising a bar shaped to form a bifurcated head portion, ahandleportion and an upwardly bowed portion intermediate said head and handle. portions, said handle portion being downwardly inclined from the plane of said head portion, and

the convex face of said bowed portion constituting a seat upon which said lifting bar is fulcrumed, and means whereby the outer ends of said bars may be secured in adjusted relation. 1

6. In a valve lifter, a lifting bar comprising a handle portion havingconnected relatively adjustable companion members te r minated at one end by j aws for engagement with a valve spring, and a fulcrum element associated with said bar, said elementcomprising a bar shaped .to form a bifurcated head portion, a handleportion and an up- I wardly bowed portion intermediate said head and handle portions, said handle portion being downwardly inclined from the plane of said head portion and having a slot in the outer end portion thereof, and a chain de pending from the. lifting bar and adapted to be seated in saidslot' for securing said bars in adjusted relation. a

In testimony whereof, I afiix my signature in presence of two subscribing witnesses.

v RICHARD L. ORISWELL, Witnesses THOS. J.-RUDGE, H. in. DUNLAP. i 

